Influence of light and temperature cycles on the expression of circadian clock genes in the mussel Mytilus edulis
Chapman, Emma ; Bonsor, Brodie; Parsons, Daniel; Rotchell, Jeanette
Professor Daniel Parsons D.Parsons@hull.ac.uk
Professor in Sedimentology/ Director, Energy and Environment Institute
Professor Jeanette Rotchell J.Rotchell@hull.ac.uk
Clock genes and environmental cues regulate essential biological rhythms. The blue mussel, Mytilus edulis, is an ecologically and economically important intertidal bivalve undergoing seasonal reproductive rhythms. We previously identified seasonal expression differences in M. edulis clock genes. Herein, the effects of light/dark cycles, constant darkness, and daily temperature cycles on the circadian expression patterns of such genes are characterised.
Clock genes Clk, Cry1, ROR/HR3, Per and Rev-erb/NR1D1, and Timeout-like, show significant mRNA expression variation, persisting in darkness indicating endogenous control. Rhythmic expression was apparent under diurnal temperature cycles in darkness for all except Rev-erb. Temperature cycles induced a significant expression difference in the non-circadian clock-associated gene aaNAT. Furthermore, Suppression Subtractive Hybridisation (SSH) was used to identify seasonal genes with potential links to molecular clock function revealed numerous genes meriting further investigation. Understanding the relationship between environmental cues and molecular clocks is crucial in predicting the outcomes of environmental change on fundamental rhythmic processes.
|Journal Article Type||Article|
|Journal||Marine environmental research|
|Peer Reviewed||Peer Reviewed|
|APA6 Citation||Rotchell, J., Chapman, E., Bonsor, B., & Parsons, D. (in press). Influence of light and temperature cycles on the expression of circadian clock genes in the mussel Mytilus edulis. Marine environmental research, https://doi.org/10.1016/j.marenvres.2020.104960|
|Keywords||Mytilus; Bivalve; Mollusc; Circadian rhythm; Clock; Light; Photoperiod; Diurnal; Temperature; mRNA|
This file is under embargo until Mar 24, 2021 due to copyright reasons.
Contact J.Rotchell@hull.ac.uk to request a copy for personal use.
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Seasonal expression patterns of clock-associated genes in the blue mussel Mytilus edulis